2.1 The Nature of Matter Flashcards
The basic unit of matter.
Atom
What are the
subatomic particles that make up atoms?
Protons, neutrons, and electrons.
What two subatomic particles forms the nucleus, at the center of the atom?
Protons and neutrons
Are positively charged particles (+)
protons
These particles carry no charge.
neutrons
Is a negatively charged particle (-).
electrons
Two subatomic particles that have the same mass?
Protons and neutrons
Atoms have equal numbers of?
Electrons and protons
Is a pure substance that is made up of only one
kind of atom.
Elements
Each element has a one- or two-letter symbol.
For example, the symbol for carbon is C, and for sodium is Na.
The number of protons in the atom of an element is the element’s
atomic number
The total number of protons and neutrons
in an atom is the atom’s
mass number
In the ionic bond, which one likes to give away electrons?
Metals
In the ionic bond, which one likes to receive electrons?
Nonmetals
Metal + Nonmetal=
Ionic Bonding
Nonmetal + Nonmetal=
Covalent Bonding
opposite charged ions (+-) it
attract each other
Atoms that have positive and negative charges
ions
Single bond, doble bond, and triple bond
2, 4, 6, are examples of covalent bonding
Shared of electros
Covalent Bonding
The smallest unit of most
compounds
Molecule
Transferred of electrons
Ionic Bonding
Is a substance
formed by the chemical combination of two or more elements in
definite amounts
A compound
The structure that results when atoms are joined together by covalent
bonds is called
a molecule
What are the main kinds of chemical bonds?
Ionic Bond and Covalent Bonds
Is a pure substance
that consists entirely of one type of atom.
Chemical Element
Atoms of the same element that differ in the number of neutrons they contain are known as
Isotopes
Atoms in compounds are held together by
chemical bonds
